I cleaned up, scuffed, washed with Dawn soap and cleaned again with MEK the following parts: F821 top skin (inside rivet lines), F873g hinge support, F873h spacer, F821B &C baggage support strips, F8104 support ribs, and some parts to the baggage door- F873k pins and the F873l lock tab. Then shot all parts with primer. TIP-I usually shoot primer on parts laying close together and sometimes get overspray on other parts. After all parts dry, I have found that gently rubbing the oversprayed parts with Bounty kitchen towel will remove the overspray and make the primed surface very smooth.